The utility model discloses clean water source system of water power station technology water supply belongs to water power plant system's technical field, the technical problem that will solve does:to most spiral case water intaking or the top cap water intake mode of adopting of current water power station technology water supply, water supply source is upland water, to high sediment content'sriver, easily causes the jam of water supply water purifier, technological water supply reliability subalternation problem, provides a clean water source system of water power station technology watersupply, and adoption recycle abandonment water hangs down as clean water source, shaft seal water supply reliability height, operation expense, the technical scheme who adopts does: including low level pond, shaft seal water supply and dam leakage water collection device, the delivery port in low level pond is linked together through pipeline and the entry that shaft seal supplied water, and damleakage water collection device installs and collect abandonment percolating water on the dam, and dam leakage water collection device's delivery port is linked together through pipeline and low levelpond, the utility model discloses mainly used water power station technology water supply system's improvement.